The data here were extracted from whaling logbooks by Lt. Cdr. Matthew Fontaine Maury of the U. S. Navy. The data include information on the location of whaling vessels and whales seen or caught from late 18th to mid-19th centuries.
We extracted the whale observations from original logbooks and added them to data files of vessel location and weather data prepared by NOAA. These data represent most logbooks used by Maury, but some records could not be associated with specific voyages.